login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A008288 as a simple table

na(n)
01
11
21
31
43
51
61
75
85
91
101
117
1213
137
141
151
169
1725
1825
199
201
211
2211
2341
2463
2541
2611
271
281
2913
3061
31129
32129
3361
3413
351
361
3715
3885
39231
40321
41231
4285
4315
441
451
4617
47113
48377
49681
50681
51377
52113
5317
541
551
5619
57145
58575
591289
601683
611289
62575
63145
6419
651
661
6721
68181
69833
702241
713653
723653

[1,1,1,1,3,1,1,5,5,1,1,7,13,7,1,1,9,25,25,9,1,1,
 11,41,63,41,11,1,1,13,61,129,129,61,13,1,1,15,85,
 231,321,231,85,15,1,1,17,113,377,681,681,377,113,
 17,1,1,19,145,575,1289,1683,1289,575,145,19,1,1,
 21,181,833,2241,3653,3653]